EXT4 is not part of Xen, it's part of the Linux kernel that runs in dom0 on 
Xen. Gentoo's Xen kernel should run fine on the Xen 3.4.2 tarball from the Xen 
site. Xen's site only has the 2.6.18 kernel, which probably does not include 
EXT4. You could try to find someone who has back-ported EXT4 to 2.6.18, but 
I'm not sure that's actually happened.
-Nick
>>> On 2010年01月12日 at 19:25, Yunfeng Xu <hywl51@xxxxxxxxx> wrote:
> I currently use the xen-3.4.2 tarball from http://www.xen.org/. What
> are the differences between officail version and the gentoo version?
> Does it means the official version don't support the newer kernel
> version with the mint8(2.6.31-14), so gentoo makes the patch?
>
> On 1/12/10, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:
>> All entries bellow have root=/sdb11 ro console=tty0 compiled as built-in
>> string (root FS is ext4)
>> 2.6.31.8(9) xen-ified aka Suse kernels via Andy Lyon's rebased patch sets :-
>>
>> http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.31-10.tar.bz2 
>> for vanilla 2.6.31.9
>> http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.31-9.tar.bz2 
>> for vanilla 2.6.31.8
>>
>> menuentry "Xen 3.4 / Ubuntu 9.10 kernel 2.6.31.9 xenified" {
>> insmod ext2
>> set root=(hd1,10)
>> multiboot (hd1,10)/xen-3.4.gz
>> module (hd1,10)/vmlinuz-2.6.31.9
>> module (hd1,10)/initrd-2.6.31.9.img
>> }
>>
>> menuentry "Xen 3.4 / Ubuntu 9.10 kernel 2.6.31.8 xenified" {
>> insmod ext2
>> set root=(hd1,10)
>> multiboot (hd1,10)/xen-3.4.gz
>> module (hd1,10)/vmlinuz-2.6.31.8
>> module (hd1,10)/initrd-2.6.31.8.img
>> }
>>
>> menuentry "Xen 3.4 / Ubuntu 9.10 kernel 2.6.31.6 pvops" {
>> insmod ext2
>> set root=(hd1,10)
>> multiboot (hd1,10)/xen-3.4.gz
>> module (hd1,10)/vmlinuz-2.6.31.6
>> module (hd1,10)/initrd-2.6.31.6.img
>> }
>>
>> Every entry works.
>>
>> Boris.
>>
>> --- On Tue, 1/12/10, Yunfeng Xu <hywl51@xxxxxxxxx> wrote:
>>
>> From: Yunfeng Xu <hywl51@xxxxxxxxx>
>> Subject: [Xen-users] Does xen 3.4.2 support EXT4 filesystem?
>> To: xen-users@xxxxxxxxxxxxxxxxxxx 
>> Date: Tuesday, January 12, 2010, 3:21 AM
>>
>> Hi, guys
>>
>> I try to install xen 3.4.2 on my mint 8, and got the following error
>> when system boots:
>>
>> not syncing: VFS: unable to mount root fs on unknow-block (0,0)
>>
>> This is my grub2 config:
>>
>> menuentry "Xen 3.4 / XenLinux 2.6 (/dev/sda1)" {
>> insmod ext2
>> set root=(hd0,1)
>> search --no-floppy --fs-uuid --set 2cc821fc-4ac1-426a-bfb6-0e97e8a07046
>> multiboot (hd0,1)/boot/xen-3.4.gz
>> module (hd0,1)/boot/vmlinuz-2.6.18.8-xen root=/dev/sda1 ro quiet
>> splash
>> }
>>
>> My guess that the problem is due to EXT4, does anyone can give me some
>> advise?
>>
>> Thanks
>> Yunfeng
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx 
>> http://lists.xensource.com/xen-users 
>>
>>
>>
>>
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